This feeding schedule is for the birds

For two days now DJ has been really screwy with his feedings.  He usually wants to eat every few hours and takes around 3oz but yesterday and all day today he has wanted to eat an ounce or two and then eat a small amount again an hour later.  I have tried changing the nipple size and rewaking him for him to eat more and he just won't take any more until a while later. I'm guessing a growth spurt is to blame but who knows.  I do know that this schedule can NOT keep up.  I am 6 weeks post partum today and was looking forward to a few things but with this feeding schedule I don't think those things will happen...